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ASTM A681 A6 vs SAE J404 4135

Related Material — 65% match based on chemical composition and mechanical property overlap.

ASTM A681 A6 (ASTM A681:2008) and SAE J404 4135 (SAE J404:2009) are both steel grades. ASTM A681 A6 is classified under Tool & Die Steels, while SAE J404 4135 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. ASTM A681 A6 is typically used for tools, dies and fixtures (clause 1.2), while SAE J404 4135 is commonly used for gears, shafts, pressure vessels, high tensile bolts. ASTM A681 A6 is defined under ASTM International, originating from United States, while SAE J404 4135 is defined under SAE International, originating from United States.

As per chemical composition, ASTM A681 A6 vs SAE J404 4135 is a 68.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With ASTM A681 A6:
GB/T 1299 3Cr2W8V DIN EN ISO 4957 1.2344 EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 118T3 IS 1570 (Part 6) 133T3 GB/T 1299 4Cr5MoSiV1 GB/T 1299 4Cr5MoSiV EN ISO 683-17 100Cr6 GOST 5950 3H2W8F GOST 5950 4H5MFS
Match Breakdown
CHEMISTRY MATCH
68.7%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property ASTM A681 A6 SAE J404 4135
Standard ASTM A681:2008 SAE J404:2009
Category Tool & Die Steels Alloy Steel
C (%) 0.65-0.75 0.33-0.38
Mn (%) 1.80-2.50 0.70-0.90
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.040
Si (%) 0.10-0.70 0.15-0.35
Cr (%) 0.90-1.40 0.80-1.10
Mo (%) 0.90-1.40 0.15-0.25
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A681 A6 SAE J404 4135
Hardness <=248 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Typical Applications
ASTM A681 A6
Tools, dies and fixtures (clause 1.2)
SAE J404 4135
Gears, shafts, pressure vessels, high tensile bolts
Key Differences
Can ASTM A681 A6 Be Substituted With SAE J404 4135?
ASTM A681 A6 and SAE J404 4135 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
ASTM A681 A6
No active listings currently.
SAE J404 4135
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6100–6700 mm (240.16–263.78 in)
On M-EX Right Now
ASTM A681 A6
0 active listings and RFQs →
SAE J404 4135
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A681 A6 and SAE J404 4135?
Different category: ASTM A681 A6 is Tool & Die Steels, SAE J404 4135 is Alloy Steel.
Can ASTM A681 A6 be substituted with SAE J404 4135?
ASTM A681 A6 and SAE J404 4135 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.